CN107631955A - Method for estimating iron grade in strip-shaped magnet quartzite iron ore by using true density - Google Patents

Method for estimating iron grade in strip-shaped magnet quartzite iron ore by using true density Download PDF

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Publication number
CN107631955A
CN107631955A CN201710801347.XA CN201710801347A CN107631955A CN 107631955 A CN107631955 A CN 107631955A CN 201710801347 A CN201710801347 A CN 201710801347A CN 107631955 A CN107631955 A CN 107631955A
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China
Prior art keywords
iron
density
ore
ribbon
ore deposit
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CN201710801347.XA
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Chinese (zh)
Inventor
付强
肖仪武
方明山
李磊
金建文
王明燕
郜伟
马楠
叶小璐
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Beijing General Research Institute of Mining and Metallurgy
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Beijing General Research Institute of Mining and Metallurgy
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Priority to CN201710801347.XA priority Critical patent/CN107631955A/en
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Abstract

The invention discloses a method for estimating the iron grade in strip magnet quartzite iron ore by using true density, which comprises the following steps: measuring the true density of the strip-shaped magnetite-quartzite iron ore by using a powder sample true density measuring method; and calculating the iron grade by using the measured true density of the strip magnet quartzite iron ore and the density of magnetite, the content of iron and the density of quartz in the strip magnet quartzite iron ore. The method can be used for rapidly measuring the iron grade in the iron ore under the condition that chemical analysis equipment is absent, is simple and rapid to operate, saves equipment, materials and labor cost, ensures safe working conditions, avoids environmental pollution, and is beneficial to accelerating the development speed of the mine.

Description

The method of Iron grade in ribbon magnetite quartzite sections ore deposit is speculated using real density
Technical field
The present invention relates to mining and metallurgy technology field, more particularly to one kind to speculate ribbon magnetite quartzite sections using real density The method of Iron grade in ore deposit.
Background technology
China's iron ore deposit rich reserves, but the iron resource for being easier to utilize is few, in recent years, along with domestic economy Fast development, the demand of iron resource is constantly increased, China is strengthening outside exploitation dynamics to domestic iron ore mine, to state The import of outer iron ore also increases increasingly.Wherein, ribbon magnetite quartzite sections ore deposit is to utilize a kind of very wide work in the world Industry type, its ore are mainly made up of quartz and magnetic iron ore thin layer in alternating layers, though the type iron ore iron-holder is low, reserves are big, And it is optional functional, and one of most important exploitation use pattern in China.Therefore, to the type iron ore mine development process In, the content of quick obtaining iron in ore is particularly important.
Detection method is usually sample examination at present.But the shortcomings that sample examination be establish early stage assay laboratory into This is higher, and time-consuming.Ageing relatively low in test process, reagent consumption is larger, while these chemical reagent usually have toxicity And corrosivity, there is higher tightened up requirement to the quality of working environment and staff, in addition, the discharge of medicament usually can Pollute environment.
In addition, some mine capacities are smaller, or it is remote, be not suitable for establishing laboratory, sample will generally be sent to it It chemically examines mechanism and analyzed, and then influences the production efficiency in mine.
The content of the invention
Speculate Iron grade in ribbon magnetite quartzite sections ore deposit using real density it is an object of the invention to provide a kind of Method, the quick Iron grade determined in iron ore, it can not only save and be largely parsed into the case where chemical analysis apparatus lacks This, while help speed up the development rate in mine.
The purpose of the present invention is achieved through the following technical solutions：
A kind of method that Iron grade in ribbon magnetite quartzite sections ore deposit is speculated using real density, including：
Utilize the real density of powder sample real density assay method measure ribbon magnetite quartzite sections ore deposit；
Using the real density of the ribbon magnetite quartzite sections ore deposit of measure, and in ribbon magnetite quartzite sections ore deposit The density of magnet mineral density, the content of iron and quartz calculates Iron grade.
As seen from the above technical solution provided by the invention, it is not only simple to operate, quick, and save equipment, material Material and human cost, while ensure condition of work safety, avoid environmental pollution.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.
Fig. 1 is Iron grade in the supposition ribbon magnetite quartzite sections ore deposit provided in an embodiment of the present invention using real density The flow chart of method.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to protection scope of the present invention.
The embodiment of the present invention provides a kind of side that Iron grade in ribbon magnetite quartzite sections ore deposit is speculated using real density Method, as shown in figure 1, mainly comprising the following steps：
Step 11, the real density using powder sample real density assay method measure ribbon magnetite quartzite sections ore deposit.
Step 12, using measure ribbon magnetite quartzite sections ore deposit real density, and ribbon magnetite quartzite The density of magnet mineral density in sections ore deposit, the content of iron and quartz calculates Iron grade.
Such scheme of the embodiment of the present invention, can be quick to determine in iron ore in the case where chemical analysis apparatus lacks Iron grade, it is not only simple to operate, quick, and equipment, material and human cost are saved, while ensure condition of work safety, keep away Exempt from environmental pollution, while additionally aid the development rate for accelerating mine.
In order to make it easy to understand, it is described in further detail below for the principle of such scheme.
1st, Iron grade and the correlation of real density are investigated thoroughly, with reference to magnet mineral density in ribbon magnetite quartzite sections ore deposit, The content of iron and the density of quartz establish the functional relation of real density and Iron grade.
As a rule, ribbon magnetite quartzite sections ore deposit essential mineral is magnetic iron ore and quartz, takes certain ribbon Magnetite quartzite sections ore deposit sample ore, it is assumed that the quality of sample ore is M, volume V, density ρ, and the grade of iron is T in sample ore；Sample ore The quality of middle magnetic iron ore is m1, volume v1, density ρ1, the content of iron is t in magnetic iron ore1；The quality of quartz is m2, volume is v2, density ρ2；
Wherein,
According to the density of sample oreFrom And derive
Then in sample ore iron grade
Wherein, the density p of magnetic iron ore1, quartz density p2And the content of iron is t in magnetic iron ore1It is known quantity, can be with Determined by being searched on mineral textbook；Wherein：ρ1=5.0g/cm3, ρ2=2.65g/cm3, t1=72.36%；
Real density and the functional relation of Iron grade are obtained after substituting into above formula：
Real density (ρ) inversely proportional letter of Iron grade in sample ore (T) and sample ore is can be seen that from above-mentioned functional relation Number, the real density (ρ) of the two correlation, i.e. sample ore is bigger, and the content (T) of iron is higher in sample ore.
2nd, in the embodiment of the present invention, the true of ribbon magnetite quartzite sections ore deposit is determined using powder sample real density assay method Density.
Key step is as follows：
1) sample ore of ribbon magnetite quartzite sections ore deposit is finely ground to -200 mesh and accounts for 100%, as measure real density Test specimens.
2) drying bottle is rocked on alcolhol burner, measures the quality m of drying bottle after bottle is thoroughly dried with electronic balanceBottle。
3) certain test specimens are added into drying bottle, measure quality mBottle+ore deposit。
4) certain deionized water is added into drying bottle again, and test specimens and deionized water are sufficiently mixed；In this mistake Heating repeatedly will be dried in journey makes bubble in bottle be driven away completely, and bubble will fill it up with deionized water after driveing in drying bottle, Measure quality mBottle+ore deposit+water。
5) after all being poured out test specimens in drying bottle and deionized water and cleaning drying bottle, will be filled it up with drying bottle Ionized water measures mBottle+water。
6) real density is calculated using following formula：
The real density of the ribbon magnetite quartzite sections ore deposit of above formula measure is substituted into the real density established before and iron product In the functional relation of position, so as to calculate Iron grade.
Exemplary, by taking certain ribbon magnetite quartzite sections ore as an example, the mineral composition in the iron ore is substantially For magnetic iron ore and quartz, real density is carried out to sample ore and determines to obtain ρ=3.5g/cm3.It can be calculated by above-mentioned data in sample ore Iron gradeI.e. Iron grade is about 37.43% in the iron ore.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment can To be realized by software, the mode of necessary general hardware platform can also be added by software to realize.Based on such understanding, The technical scheme of above-described embodiment can be embodied in the form of software product, the software product can be stored in one it is non-easily In the property lost storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.), including some instructions are causing a computer to set Standby (can be personal computer, server, or network equipment etc.) performs the method described in each embodiment of the present invention.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in, It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims Enclose and be defined.

Claims (3)

  1. A kind of 1. method that Iron grade in ribbon magnetite quartzite sections ore deposit is speculated using real density, it is characterised in that including：
    Utilize the real density of powder sample real density assay method measure ribbon magnetite quartzite sections ore deposit；
    Utilize the real density of the ribbon magnetite quartzite sections ore deposit of measure, and magnet in ribbon magnetite quartzite sections ore deposit The density of mineral density, the content of iron and quartz calculates Iron grade.
  2. A kind of 2. side that Iron grade in ribbon magnetite quartzite sections ore deposit is speculated using real density according to claim 1 Method, it is characterised in that the real density that ribbon magnetite quartzite sections ore deposit is determined using powder sample real density assay method Step is as follows：
    The sample ore of ribbon magnetite quartzite sections ore deposit is finely ground to -200 mesh and accounts for 100%, the test specimens as measure real density；
    Drying bottle is rocked on alcolhol burner, measures the quality m of drying bottle after bottle is thoroughly dried with electronic balanceBottle；
    Certain test specimens are added into drying bottle, measure quality mBottle+ore deposit；
    Certain deionized water is added into drying bottle again, and test specimens and deionized water are sufficiently mixed；Will during this Drying heating repeatedly makes bubble in bottle be driven away completely, and bubble will fill it up with deionized water after driveing in drying bottle, measure matter Measure mBottle+ore deposit+water；
    After test specimens in drying bottle and deionized water are all poured out and clean drying bottle, deionized water will be filled it up with drying bottle Measure mBottle+water；
    Real density is calculated using following formula：
  3. A kind of 3. side that Iron grade in ribbon magnetite quartzite sections ore deposit is speculated using real density according to claim 1 Method, it is characterised in that the real density of the ribbon magnetite quartzite sections ore deposit using measure, and ribbon magnet quartz The density of magnet mineral density, the content of iron and quartz includes to calculate Iron grade in lithotype iron ore：
    Real density is established with reference to the density of magnet mineral density, the content of iron and quartz in ribbon magnetite quartzite sections ore deposit It is as follows with the functional relation of Iron grade, its step：
    Take certain ribbon magnetite quartzite sections ore deposit sample ore, it is assumed that the quality of sample ore is M, volume V, density ρ, sample ore The grade of middle iron is T；The quality of magnetic iron ore is m in sample ore1, volume v1, density ρ1, the content of iron is t in magnetic iron ore1；Stone The quality of English is m2, volume v2, density ρ2；
    Wherein,
    According to the density of sample oreSo as to push away Export
    Then in sample ore iron grade
    Wherein, the density p of magnetic iron ore1, quartz density p2And the content of iron is t in magnetic iron ore1It is known quantity：ρ1=5.0g/ cm3, ρ2=2.65g/cm3, t1=72.36%；Real density and the functional relation of Iron grade are obtained after substituting into above formula：
    <mrow> <mi>T</mi> <mo>=</mo> <mo>-</mo> <mfrac> <mn>4.08</mn> <mi>&amp;rho;</mi> </mfrac> <mo>+</mo> <mn>1.54</mn> <mo>;</mo> </mrow>
    The real density of the ribbon magnetite quartzite sections ore deposit of measure is substituted into the functional relation of above-mentioned real density and Iron grade In, so as to calculate Iron grade.
CN201710801347.XA 2017-09-07 2017-09-07 Method for estimating iron grade in strip-shaped magnet quartzite iron ore by using true density Pending CN107631955A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131668A (en) * 1974-03-15 1978-12-26 Nippon Steel Corporation Iron ore pellet process control
JP2004340602A (en) * 2003-05-13 2004-12-02 Mitsubishi Materials Corp Method for measuring specific gravity of copper refining slag, program and gravity concentrator
CN101701893A (en) * 2009-12-11 2010-05-05 攀枝花环业冶金渣开发有限责任公司 Method for detecting iron grade of iron slag
CN102175569A (en) * 2011-03-01 2011-09-07 武汉理工大学 Underground iron ore dynamic weighing and real-time grate analyzing method
CN104483234A (en) * 2014-12-19 2015-04-01 中冶集团武汉勘察研究院有限公司 Automatic iron ore grade detection system and method
CN204461938U (en) * 2014-12-19 2015-07-08 中冶集团武汉勘察研究院有限公司 A kind of iron ore grade automatic checkout system
CN105372154A (en) * 2015-11-24 2016-03-02 中冶节能环保有限责任公司 Method for measuring metallic iron content in steel slag
CN105510181A (en) * 2016-01-20 2016-04-20 华北理工大学 Method for quickly detecting total iron grades of hematite concentrates

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131668A (en) * 1974-03-15 1978-12-26 Nippon Steel Corporation Iron ore pellet process control
JP2004340602A (en) * 2003-05-13 2004-12-02 Mitsubishi Materials Corp Method for measuring specific gravity of copper refining slag, program and gravity concentrator
CN101701893A (en) * 2009-12-11 2010-05-05 攀枝花环业冶金渣开发有限责任公司 Method for detecting iron grade of iron slag
CN102175569A (en) * 2011-03-01 2011-09-07 武汉理工大学 Underground iron ore dynamic weighing and real-time grate analyzing method
CN104483234A (en) * 2014-12-19 2015-04-01 中冶集团武汉勘察研究院有限公司 Automatic iron ore grade detection system and method
CN204461938U (en) * 2014-12-19 2015-07-08 中冶集团武汉勘察研究院有限公司 A kind of iron ore grade automatic checkout system
CN105372154A (en) * 2015-11-24 2016-03-02 中冶节能环保有限责任公司 Method for measuring metallic iron content in steel slag
CN105510181A (en) * 2016-01-20 2016-04-20 华北理工大学 Method for quickly detecting total iron grades of hematite concentrates

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Application publication date: 20180126